IT's official #lightsail2 has burned up after an inspiring and very successful nearly three-and-a-half years mission demontrating solar sailing. Here's an overview plus some pictures of this project funded by tens of thousands of Planetary Society members and backers. https://www.planetary.org/articles/lightsail-2-completes-mission

#lightsail2
Image The Planetary Society (CC BY-NC 3.0)